I think he brought this vitriol from the right by himself. He had no reason to call the conservative opponents stupid or bad citizens or bigoted Americans. That just pissed them off. He has made no gesture to apologize for those statements, so we must assume he meant them. C’et la vie. He’s political toast and a true lame duck.
Actual words uttered by the President? Don't think so. More hyperbole.
That's what you get with people who tend to be vitriolic. Hyperbole.